Internet Speed Guides

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Whether you are diagnosing a slow connection or just curious what your numbers mean, these guides explain it in plain language, with a free speed test one tap away. They are short on purpose: each one answers a single question well, links the evidence, and hands you back to the test so you can check your own line rather than take anyone's word for it.

How to test your internet speed

The right way to run a speed test and get a result you can trust, on a phone or computer. Covers the mistakes that skew results most: testing over a weak Wi-Fi link and calling it your provider's fault, leaving cloud backups running mid-test, and judging a line from a single run instead of a few spread across the day.

What is a good internet speed?

How many Mbps you actually need for streaming, gaming, video calls and busy households. Short version: most homes are comfortable between 25 and 100 Mbps of real measured download; 4K streams want about 25 Mbps each; and past a point, extra download speed buys nothing while latency and upload decide how calls and games feel.

Why is my internet slow?

The common causes of a slow connection and how to find the culprit with a speed test: distinguishing a Wi-Fi problem from a line problem, spotting evening congestion by comparing results at different hours, and knowing when the fix is a router reboot, a channel change, or a call to your provider.

Mbps, latency, jitter and ping explained

What each number on a speed test means, why Mbps is not the same as MB/s (a 100 Mbps line downloads about 12.5 megabytes per second), and which metric matters for which activity: download for streaming, upload for sending and backups, latency and jitter for calls and gaming.

Compare against real-world data

Numbers mean more with context. The Internet Speed Atlas ranks the median real-world download speed of over a hundred countries from real browser tests, so you can see how your result compares with the typical connection in your country, which providers measure fastest there, and how desktop and mobile differ. The Real-World Speed page explains the method behind those numbers, and why they read lower, and more honest, than peak-rate tests.

Test your connection

Every guide pairs with the same free test that runs on this site: no app, no account, a real-time graph, and results you can save and compare over time.